Plate-printing machine



INVE N'I'O R MIA/La I cf *f Afivs' A. J. HORTON PLATE PRINTING MACHINE Fid oct.

May 28, 1929.

Patented May 28, 1929.

, UNITED STATES PATENT ALBERT .1. Hon'ron, or wn'rrnrramsniiw YORK, Assieno'n ron. Hona'coqyrnc., f or' mawv :omen Y., A coRroR-iirion or NEW YORK;

rLA'rE-PRINTING MACHINE.

` Application med, october 22, 1927. serial 'Ng. 227,9i4.2

f, This invention relates to certain improve iments in controlling, -devices for y controlling the movementshof. the, plate supporting beds or planks in plate printing machines.

5 In certain classes of plate :`riiting'ma-l chines, the engraved plates are supported oii beds or planks Which' are given a traveling :movement around a` rectangular frame under suitable inkiig, wiping,, and impression mechanisms, these mechanisms being conveniently arranged' on different sides v,of the frame. vIn its traveling movem ent,. around o the frame, the direction 'of. the plank v is changed, these movements being at rightanglestoeach otherv where' the plank .goes ;around the'- corners. These'planks and the mechanisms by which they :are operated 'are heavyand the change in the direction of movement is apt to iproduce aQjar, which causeswear of. the parts, is'fnoisy, Vand is objectionable ford various other reasons.

. j Firtherm'ore,y the planks are .apt'totirnim properly in goingaroundthe corners, with` the result that ;the do not properly engage the guides by vvhic 4their straight linemovements are controlled; g

It is the especial ;object of the ;presentinvention to provide a simple and effective construction for controllingl the plank or bed as it movesaround the corners'during its I.

traveling movement inl themachine whicli willlact to pro rly'dir'eot the plankso that it will be jlineldvup withits guidestand in gwhich the jar orgchattering ;of the' bed 'in Igoing around the corners is. eliminated, vthese controlling means being of.y lsuchf,character and. `,soipositioned 'ashnot. to interfere jwith the operation ofthe driving mechanism for the lbed'or plank.

It isa further object Vof the invention to changing .QIQregarrangement ;ofjthe mech; anism.: ,fil

With these. and. .Othervobjeets not, Specfi- .cally referred to in view, the inventioiifcon-y ings and the novel features pointed out away,of one corner of a power plate machine illustratingv the invention and showing the bed or plank 'approaching a corner, -an df v FigureQ is a Sectional view of the :construction shown in Figure 1,. the .section being taken on line 2-2 of thatgfigure and.

llooking in the direction `of arrow 2. f,

Referring now to these drawings, fth has been illustrated,` one corneroffarpower Figurel 1 -is a plan view, .l partly lbroken oF FIC 5 ere ,f

Vplate machine Vshowing ,the improved plank .controlling device, it beingunderstood that-v the lconstruction' is duplicatjed at; each ;corner of the press. In the .construction shown thereis providedsuitable frame-work inl the form of a rectangle, two sides, 1,'2, of v which are illustrated. This 'frameworklniay be Vjof yany suitable character,- bu t isg preferably formed with a shoulder 3 :andaledgefiy ;which form an outside guide forthe plate 'bed `or plank 5.vv Inner guides 6 n iayloeV provided, the plate, in its straight linemovef l ments, being guided by tlievyguides @and the i' vshoulder 3. Tlieguides 6 and the .ffra'mes' 1, 2:,atthe corners :are.curved, asindicatedf at 7, the plank moving aroundftliesegcu'rved vportions during its travel1ng.movement.

The iplank is driven'in any ;suitable maii-V` Y nerand, inl` the particular; constructionV 'shown, there is provided a vertical shaft 8, driven from any; suitable Vsource .of power,

'supported ,at its upper .end in ia vhub 91 1 formed ina web 10, which may bepart'of the franiing ;1, 2,V before referredt l@This shaft, at its uppereiid, is provided withqa v f driving v'sprocket 11 over which passes ila driving chain-12 .whichfcarriesa driving pin 13 Vwhich engages in a socket'E 14. formed on the under side of the planl. yIn,, ac c ordance with the invention, means arezprovi'ded forcontrolling the movement of the plank as it passes around the corners oftheframe.

.and to cause tlieplaIik-jto be properlyfpositioned with respectv to .thek side guides which engage it after it hasjnade theturn,l

fWhfle the Specific. .arrangement ,of these controlling means may be somewhat varied, in the particular construction shown vthe plank on its under side is provided at or near each corner with a pin 15. Cooperating with two of these pins is a pair of guid-V ing members having curved ,controlling surfaces, theseinembers being arranged to engage the pins in opposite corners of the plank. Vhile these controlling members may be of variousforms, in the particular construction shown they preferably will be rotatable and are shown in the form of dise wheels 16, 17. The wheel 16 is rotatably carried on a spindle 18 mounted in a web 19 of the frame, and the wheel 17 is carried on a spindle 20 supported in a web'21 of the main frame, these wheels being arranged, as shown, so that they are `on the sameeside ofthe pins, that is, at the right of the' pins,l

as shown in Figure 1. Thile the pins have been shown as carried by the bed or plank and the wheels as supported .in the webs, it will be understood that this arrangement could be readily reversed. 1

The'iparts vare arranged so that the dis tance from the center of the controlling disc 16 to the center of the pins 15 isthe same as the distance from the center of the, shaft 8 to the pitch lineof thersprocket 11. TWith this arrangement, assuming the bed to be moving inithe direction of arrow 1 .of Figure 1, as the pin 13, which drives the bed or plank, moves around this sprocket, the pins 415 will likewise pass around the discs 16, 17.

Any tendency of the bed or plank to turnor move on its driving pin will result in lthe pressing of one of the pins 15 against the,

disc which it engages, and any tendency of the plank to turn inthe other direction will result in the other pin pressing against its wheel. Thus the plank is properly guided i as it passes around the corners of the frame,

and any liability to get out of line or to chatter is overcome. The two pins indicated at 15' in the opposite corners of the plate, it is-understood, will engage discs at the next corner, similar to discs 16, 17, so

that the plank is properly guidedthr'oughout its entire travel around the frame.

Vhile the invention has-been shown and described in its preferred forms, it will be understood that various changes may be made in the form and arrangement of the parts without departing from the invention as defined in the appended claims.

WhatI claim is:

` 1. InV a plate printing machine, the coinbination witlithel fra1ne,of a traveling bed or plank, projections near opposite corners of the plank, and discs on the'frame engaged by the projections as the plank i passes around a corner of the frame.

2. Ina plate printing machine,` the combination4 with the frame, of a traveling bed or plank, pins near opposite corners of the plank, and discs on the frame engaged by the pins as the plank passes around a corner of the frane.

3. In a plate printing machine, the coinbination with the frame, of'a traveling bed or' plank, diagonally arranged pins on the plank, and discs rotatably mounted on the.

the same as the distance from the center of the sprocket to its pitch line.` i

5. In a plateprinting machine, the combination with the frame, of a traveling bed lor plank, pins on the plank, and discs on the frame arranged on the same side of the pins and engaged by the pins as the plank passes around the corners of theframe.

6. In a plate' printing machine, the combination with the frame, of a traveling bed or' plank, pins on the plank, and oppositely disposed guides having curved sui-faces on the frame arranged on the same side ofthe pins and engaged by the pinsduring the whole traveling inovement of the plank around thc'corners of the frame, so that the plank is held against swinging in either direction during suchmovement.

7. In a 'plate printing machine, the combination with the frame, of a traveling bed or plank, discs on the frame, and depending lpins on the plank engaging the discs during the cornersfof the frame. v

8. In a plate printing machine, the coinbination with the frame,lof a traveling bed or plank, a chain for driving the plank, co-

the whole movement of the plankaround operating pins and curved guides on the.

plank and frame located below the* plank and outside the chain, for guiding the plank as it passes -aroundthe corners of the frame. 9. In a' plate printing machine, the combination-with the frame, of a traveling bed or plank, projections arranged on the plank idiametrically' opposite each other, and oppositely disposed abutments on the frame engaged by the proj ections during' `the whole traveling movement of the plank around a corner of the frame, so that the plank is held against swinging in either direction during such movement.

10. In a lplate printing machine, the coinbination with the frame, of a traveling bed or plank, projections arranged on the plank 'diametr'ically opposite each other, and op positely disposed rotaryi abutments on the frame engaged by the projections during the whole traveling movement Vof the plank around a corner of the frame, so that the plank is held against swinging in either div rection during such movement.

11. In a plate printing machine, the com- 5 bination with the frame, of a traveling bed or p1ank,`nrojection's arrangedon the plank diamet'ically opposite each other, and 0ppositely disposed abutments on the frame engaged by vthe projeetions as'the plank passes around a corner ofthe frame, said projec- 10 i tions and abutments'being located below the plank.

In testimony whereofiVI have her'eunto set my hand.

ALBERT J. HoRToN. 

